60:00
1 hour
Press Start to begin
Space Start / Pause · R Reset
| Start time | +60 min | −60 min |
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1 hour is the maximum deep work session length recommended by Cal Newport, the standard university lecture duration, and the exact run time of most beginner 10K training sessions.
Slow-roast a whole joint, bake a bread loaf from scratch, make a proper stock, or brew kombucha starter.
1 hour of easy running covers 8–12 km depending on pace — the standard long-run base for most training plans.
Two complete Pomodoro sessions with breaks, a full university lecture, or a professional development course module.
Deliberate practice research by K. Anders Ericsson found that elite performers typically sustain focused practice for no more than 1 hour at a time before diminishing returns set in. One hour of deep, uninterrupted work is your maximum productive block.
Start your 1 hour countdown in one click — no setup, no ads, no account needed.
The timer loads pre-set to 60:00. No configuration required.
Click Start or press Space. The ring begins counting down immediately.
Press Space to pause and resume. Press R to reset to 60:00.
Three clear beeps play when the countdown ends. The ring turns green.
Common questions about 1-hour intervals, time calculations, and this timer.
Add 1 to the hour on your clock. 3:15 PM becomes 4:15 PM. If you are at 11:45 AM it becomes 12:45 PM. If at 11:00 PM it becomes midnight (12:00 AM the following day).
1 hour equals exactly 3,600 seconds (60 minutes × 60 seconds per minute).
A 70 kg person burns approximately 280–350 calories walking briskly for 1 hour. Jogging for 1 hour burns 450–600 calories; cycling burns 400–600 calories at moderate intensity.
1 hour enters N3 slow-wave deep sleep in most adults, which causes sleep inertia — grogginess lasting 15–30 minutes on waking. For daytime recovery, 20–30 minutes or a full 90-minute cycle are both better options.
At 60 mph (96 km/h) on a motorway you cover exactly 60 miles (96 km). At 30 mph in a city you cover 30 miles. At 100 km/h you cover 100 km.
1 hour is 1.0 hours, 60 minutes, 3,600 seconds, or 0.0416667 days.
On any smartphone: open the Clock app, set 1 hour 0 minutes 0 seconds, tap Start. Ask Siri, Google Assistant, or Alexa: 'Set a timer for 1 hour.' Or use this page — it loads pre-set to 60:00 and starts with one click.